$285+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Jun 21 — Jun 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 22, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 22, 2026.
This Mytrip deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- HEL
2 stops27h 20m
Multiple Airlines
Tue 8/258:30 am
HEL
- SEA
2 stops22h 37m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$585
This Mytrip deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:00 am
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Thu 9/38:30 am
HEL
- SEA
2 stops22h 37m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$698
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:50 pm
SEA
- HEL
3 stops27h 30m
Multiple Airlines
Tue 6/97:05 am
HEL
- SEA
3 stops25h 35m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$742
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:50 pm
SEA
- HEL
1 stop13h 15m
Delta
Fri 9/187:00 am
HEL
- SEA
1 stop19h 35m
Delta
Deal found 5/20![Delta logo]()
$757
This Mytrip deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:40 pm
SEA
- HEL
3 stops23h 00m
Multiple Airlines
Thu 8/271:55 pm
HEL
- SEA
2 stops16h 45m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$782
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 22, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 22, 2026.
This Turkish Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 pm
SEA
- HEL
1 stop30h 35m
Turkish Airlines
Tue 11/177:00 pm
HEL
- SEA
1 stop32h 05m
Turkish Airlines
Deal found 5/17![Turkish Airlines logo]()
$884
This Icelandair deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:40 pm
SEA
- HEL
2 stops18h 00m
Icelandair
Wed 8/2611:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/20![Icelandair logo]()
$958
This KLM deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:25 am
SEA
- HEL
2 stops18h 45m
KLM
Mon 11/162:05 pm
HEL
- SEA
1 stop31h 42m
KLM
Deal found 5/21![KLM logo]()
$1,030
This Turkish Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:00 pm
SEA
- HEL
1 stop37h 05m
Turkish Airlines
Mon 11/1612:30 pm
HEL
- SEA
1 stop38h 35m
Turkish Airlines
Deal found 5/21![Turkish Airlines logo]()
$923
This Icelandair deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Tue 8/2511:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/20![Icelandair logo]()
$958
This Icelandair deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Mon 8/2411:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/20![Icelandair logo]()
$1,008
This Turkish Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:15 pm
SEA
- HEL
1 stop18h 40m
Turkish Airlines
Thu 10/112:05 pm
HEL
- SEA
1 stop39h 15m
Turkish Airlines
Deal found 5/17![Turkish Airlines logo]()
$1,064
This Icelandair deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/173:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Wed 8/2611:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/20![Icelandair logo]()
$1,038
This Icelandair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Fri 8/711:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/21![Icelandair logo]()
$1,048
This Icelandair deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Wed 7/2912:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 5/19![Icelandair logo]()
$1,051
This Icelandair deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Fri 8/711:40 am
HEL
- SEA
2 stops16h 15m
Icelandair
Deal found 5/21![Icelandair logo]()
$1,061
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated May 22, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated May 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 pm
SEA
- HEL
3 stops18h 50m
Multiple Airlines
Fri 6/126:10 am
HEL
- SEA
3 stops46h 35m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$890
This Mytrip deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:00 pm
SEA
- HEL
2 stops20h 30m
Multiple Airlines
Thu 6/189:05 pm
HEL
- SEA
2 stops24h 40m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$828
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:50 pm
SEA
- HEL
3 stops27h 30m
Multiple Airlines
Tue 6/97:05 am
HEL
- SEA
3 stops25h 35m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$742
This Mytrip deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:00 pm
SEA
- HEL
3 stops19h 40m
Multiple Airlines
Mon 6/159:20 pm
HEL
- SEA
3 stops33h 20m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$808
This Gotogate deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Tue 6/93:00 pm
HEL
- SEA
1 stop12h 55m
Icelandair
Deal found 5/20![Icelandair logo]()
$980
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/811:25 pm
SEA
- HEL
1 stop14h 15m
Multiple Airlines
Thu 6/183:50 pm
HEL
- SEA
1 stop14h 50m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,001
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/811:25 pm
SEA
- HEL
1 stop14h 15m
Multiple Airlines
Wed 6/243:50 pm
HEL
- SEA
1 stop14h 50m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,002
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated May 22, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated May 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 pm
SEA
- HEL
2 stops16h 20m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:25 pm
SEA
- HEL
2 stops31h 15m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:40 pm
SEA
- HEL
2 stops16h 40m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:25 pm
SEA
- HEL
2 stops35h 55m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$303
This Trip.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:40 pm
SEA
- HEL
2 stops16h 40m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:25 pm
SEA
- HEL
2 stops37h 55m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 pm
SEA
- HEL
2 stops34h 10m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 pm
SEA
- HEL
3 stops40h 40m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- HEL
2 stops53h 45m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:00 pm
SEA
- HEL
2 stops17h 55m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$341
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $585 (Mytrip) |
One-way from | $285 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,081 |
Good round-trip deal | $1,086 or less |
Good one-way deal | $419 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 22, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 11/10
7:00 pm-11:35 am
1 stop30h 35m
Helsinki-Vantaa
Tue 11/17
7:00 pm-5:05 pm
1 stop32h 05m
$884
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 11/9
7:00 pm-6:05 pm
1 stop37h 05m
Helsinki-Vantaa
Mon 11/16
12:30 pm-5:05 pm
1 stop38h 35m
$923
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 7/21
3:40 pm-7:40 pm
2 stops18h 00m
Helsinki-Vantaa
Wed 8/26
11:40 am-8:40 pm
2 stops19h 00m
$958
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 7/21
7:00 pm-7:40 pm
2 stops14h 40m
Helsinki-Vantaa
Tue 8/25
11:40 am-8:40 pm
2 stops19h 00m
$958
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 7/19
7:00 pm-7:40 pm
2 stops14h 40m
Helsinki-Vantaa
Mon 8/24
11:40 am-8:40 pm
2 stops19h 00m
$1,008
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 11/9
8:25 am-1:10 pm
2 stops18h 45m
Helsinki-Vantaa
Mon 11/16
2:05 pm-11:47 am
1 stop31h 42m
$1,030
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 7/17
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Wed 8/26
11:40 am-8:40 pm
2 stops19h 00m
$1,038
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Wed 7/15
7:00 pm-7:40 pm
2 stops14h 40m
Helsinki-Vantaa
Fri 8/7
11:40 am-8:40 pm
2 stops19h 00m
$1,048
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 7/13
7:00 pm-7:40 pm
2 stops14h 40m
Helsinki-Vantaa
Wed 7/29
12:30 pm-8:40 pm
2 stops18h 10m
$1,051
Quickest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Thu 7/16
3:40 pm-2:00 pm
1 stop12h 20m
Helsinki-Vantaa
Fri 8/7
11:40 am-5:55 pm
2 stops16h 15m
$1,061
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $540). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Helsinki?
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated May 22, 2026.
Get a feel of what it's like to fly with KLM,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Entertainment
7.2
Food
7.3
Comfort
7.7
Overall
7.8
Boarding
7.8
Crew
8.4
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Helsinki?
Book flights to Helsinki if you plan to visit one of these locationsVantaa
Lahti
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Helsinki flight routes
Other flight options
Other flights from Seattle
Popular flights
Alternative routes for Seattle to Helsinki
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Helsinki by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Helsinki by cabin class
Find flights from Seattle to Helsinki, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helsinki
Explore flights to Helsinki departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 22, 2026.
Seattle and Helsinki flights
Browse other Seattle and Helsinki flight options. Last updated on May 22, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on May 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Helsinki
Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$431 | Average$842 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$536 | Average$1,056 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$601 | Average$1,053 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$725 | Average$1,148 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$786 | Average$1,149 | FlexibilityNo cancel fee | On-time76% |